/* ===== Design tokens ===== */
:root {
  --bg: #0b0f17;
  --bg-alt: #0e1420;
  --surface: #131a27;
  --surface-hover: #182031;
  --border: #232c3d;
  --text: #e9edf5;
  --text-dim: #9aa7bd;
  --text-faint: #6b7688;
  --accent: #33d1c9;
  --accent-soft: rgba(51, 209, 201, 0.12);
  --accent-strong: #5eead4;
  --gold: #e8b866;
  --radius: 14px;
  --radius-sm: 8px;
  --max-width: 1120px;
  --font-display: "Space Grotesk", "Inter", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --shadow-lg: 0 20px 60px -20px rgba(0, 0, 0, 0.6);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

ul, ol { margin: 0; padding: 0; list-style: none; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0;
  letter-spacing: -0.01em;
}

p { margin: 0; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Background flourishes ===== */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
}

.bg-glow {
  position: fixed;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 700px;
  z-index: -1;
  background: radial-gradient(circle, rgba(51, 209, 201, 0.16) 0%, transparent 65%);
  pointer-events: none;
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 15, 23, 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--text);
}
.logo span { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-dim);
  transition: color 0.2s ease;
}
.nav-links a:hover { color: var(--text); }

.nav-cta {
  background: var(--accent-soft);
  color: var(--accent-strong) !important;
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid rgba(51, 209, 201, 0.3);
}
.nav-cta:hover { background: rgba(51, 209, 201, 0.2); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

/* ===== Hero ===== */
.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
  padding-top: 100px;
  padding-bottom: 100px;
  min-height: calc(100vh - 72px);
}

.eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-strong);
  margin-bottom: 18px;
}

.hero-text h1 {
  font-size: clamp(2.6rem, 5vw, 4rem);
  margin-bottom: 20px;
  background: linear-gradient(180deg, #ffffff 20%, #b9c4d6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lede {
  font-size: 1.15rem;
  color: var(--text-dim);
  max-width: 56ch;
  margin-bottom: 36px;
}

.hl {
  color: var(--accent-strong);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 26px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #06201d;
}
.btn-primary:hover { box-shadow: 0 12px 30px -8px rgba(51, 209, 201, 0.5); }

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-strong); }

.btn-block { width: 100%; }

.btn-icon {
  padding: 14px;
  background: transparent;
  border-color: var(--border);
  color: var(--text-dim);
  aspect-ratio: 1;
}
.btn-icon:hover { border-color: var(--accent); color: var(--accent-strong); }

.hero-stats {
  display: flex;
  gap: 40px;
}
.hero-stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.hero-stats strong {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--text);
}
.hero-stats span {
  font-size: 0.82rem;
  color: var(--text-faint);
}

.hero-media {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-photo-frame {
  position: relative;
  width: min(340px, 100%);
  aspect-ratio: 633 / 900;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}
.hero-photo-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(11,15,23,0.85) 100%);
}
.hero-photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-badge {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(11, 15, 23, 0.9);
  border: 1px solid var(--border);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-dim);
  white-space: nowrap;
  backdrop-filter: blur(10px);
}
.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

/* ===== Sections ===== */
.section {
  padding: 110px 0;
}
.section-alt {
  background: linear-gradient(180deg, transparent, rgba(255,255,255,0.015) 10%, rgba(255,255,255,0.015) 90%, transparent);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-kicker {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-strong);
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  max-width: 24ch;
  margin-bottom: 52px;
  color: var(--text);
}

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.about-copy {
  color: var(--text-dim);
  font-size: 1.05rem;
  margin-bottom: 22px;
}
.about-copy:last-of-type { margin-bottom: 0; }

.about-facts {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.fact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 26px;
}
.fact-card h3 {
  font-size: 0.95rem;
  color: var(--accent-strong);
  margin-bottom: 12px;
}
.fact-card p {
  color: var(--text-dim);
  font-size: 0.92rem;
  margin-bottom: 6px;
}
.fact-card p:last-child { margin-bottom: 0; }

/* ===== Value Proposition ===== */
.value-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.value-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.value-card:hover {
  border-color: rgba(51, 209, 201, 0.4);
  transform: translateY(-4px);
}

.value-number {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.6;
  margin-bottom: 18px;
}

.value-card h3 {
  font-size: 1.08rem;
  margin-bottom: 12px;
  color: var(--text);
}
.value-card p {
  color: var(--text-dim);
  font-size: 0.92rem;
}

/* ===== Impact Stat Band ===== */
.stat-band {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(51,209,201,0.05), transparent);
  padding: 56px 0;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: center;
}
.stat-item strong {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--accent-strong);
}
.stat-item span {
  font-size: 0.8rem;
  color: var(--text-faint);
  line-height: 1.4;
}

/* ===== Case Studies ===== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}
.case-card:hover {
  border-color: rgba(51, 209, 201, 0.4);
  background: var(--surface-hover);
  transform: translateY(-4px);
}

.case-tag {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-strong);
  background: var(--accent-soft);
  border: 1px solid rgba(51, 209, 201, 0.25);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.case-card h3 {
  font-size: 1.1rem;
  margin-bottom: 6px;
  color: var(--text);
}

.case-org {
  font-size: 0.8rem;
  color: var(--text-faint);
  font-weight: 500;
  margin-bottom: 14px;
}

.case-card p:last-child {
  color: var(--text-dim);
  font-size: 0.92rem;
}

/* ===== Career list (condensed experience) ===== */
.career-list {
  display: flex;
  flex-direction: column;
}

.career-row {
  display: grid;
  grid-template-columns: 160px 1fr 1.3fr;
  gap: 24px;
  align-items: start;
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
}
.career-row:first-child { padding-top: 0; }

.career-when {
  font-size: 0.82rem;
  color: var(--text-faint);
  font-weight: 500;
  padding-top: 3px;
}

.career-what h3 {
  font-size: 1.02rem;
  color: var(--text);
  margin-bottom: 4px;
}
.career-org {
  font-size: 0.85rem;
  color: var(--accent-strong);
}

.career-client {
  font-size: 0.8rem;
  color: var(--text-faint);
  margin-top: 2px;
}

.career-note {
  color: var(--text-dim);
  font-size: 0.9rem;
}

/* ===== Recognition ===== */
.recognition-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.recognition-col h3 {
  font-size: 0.95rem;
  color: var(--accent-strong);
  margin-bottom: 20px;
}

.recognition-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.recognition-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.recognition-list strong {
  font-size: 0.92rem;
  color: var(--text);
  font-weight: 600;
}
.recognition-link {
  color: var(--text);
  transition: color 0.2s ease;
}
.recognition-link:hover {
  color: var(--accent-strong);
}
.recognition-list span {
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* ===== Engagement chips (contact) ===== */
.engagement-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}
.chip {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-dim);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 999px;
}

/* ===== Life carousel ===== */
.carousel {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
}

.carousel-track {
  display: flex;
  width: 100%;
  transition: transform 0.5s cubic-bezier(0.65, 0, 0.35, 1);
  -webkit-transition: -webkit-transform 0.5s cubic-bezier(0.65, 0, 0.35, 1);
}

.carousel-slide {
  flex: 0 0 100%;
  width: 100%;
  min-width: 100%;
  margin: 0;
}

.carousel-slide img {
  width: 100%;
  height: 440px;
  object-fit: cover;
  display: block;
}

.carousel-slide figcaption {
  padding: 18px 26px 22px;
  font-size: 0.95rem;
  color: var(--text-dim);
}

.carousel-btn {
  position: absolute;
  top: 200px;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: rgba(11, 15, 23, 0.7);
  color: var(--text);
  font-size: 1.5rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}
.carousel-btn:hover {
  border-color: var(--accent);
  color: var(--accent-strong);
  background: rgba(11, 15, 23, 0.9);
}
.carousel-prev { left: 16px; }
.carousel-next { right: 16px; }

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 16px 0 20px;
}

.carousel-dots .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
  cursor: pointer;
  border: none;
  padding: 0;
  transition: background 0.2s ease, transform 0.2s ease;
}
.carousel-dots .dot.active {
  background: var(--accent);
  transform: scale(1.35);
}

/* ===== Timeline ===== */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 44px;
  padding-left: 32px;
  border-left: 1px solid var(--border);
}

.timeline-item {
  position: relative;
}

.timeline-marker {
  position: absolute;
  left: -38px;
  top: 6px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  box-shadow: 0 0 0 4px var(--bg), 0 0 0 5px var(--border);
}

.timeline-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 18px;
  margin-bottom: 6px;
}
.timeline-head h3 {
  font-size: 1.25rem;
  color: var(--text);
}
.timeline-date {
  font-size: 0.82rem;
  color: var(--text-faint);
  font-weight: 500;
}

.timeline-org {
  color: var(--accent-strong);
  font-size: 0.92rem;
  font-weight: 500;
  margin-bottom: 16px;
}

.timeline-content ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.timeline-content li {
  position: relative;
  padding-left: 20px;
  color: var(--text-dim);
  font-size: 0.96rem;
}
.timeline-content li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--border);
}
.timeline-content li strong { color: var(--text); }

/* ===== Skills ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.skill-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}
.skill-card:hover {
  border-color: rgba(51, 209, 201, 0.4);
  background: var(--surface-hover);
  transform: translateY(-4px);
}

.skill-icon {
  color: var(--accent);
  font-size: 1.1rem;
  margin-bottom: 16px;
}

.skill-card h3 {
  font-size: 1.05rem;
  margin-bottom: 10px;
  color: var(--text);
}
.skill-card p {
  color: var(--text-dim);
  font-size: 0.92rem;
}

/* ===== Publications ===== */
.pub-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.pub-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.pub-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gold);
  background: rgba(232, 184, 102, 0.1);
  border: 1px solid rgba(232, 184, 102, 0.25);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.pub-card h3 {
  font-size: 1.05rem;
  margin-bottom: 10px;
  color: var(--text);
}
.pub-card p {
  color: var(--text-dim);
  font-size: 0.92rem;
}

/* ===== Contact ===== */
.contact-container {
  max-width: 760px;
}

.contact-lede {
  color: var(--text-dim);
  font-size: 1.05rem;
  max-width: 60ch;
  margin-bottom: 48px;
}

.contact-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 36px;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-row label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-dim);
}
.form-row .optional {
  font-weight: 400;
  color: var(--text-faint);
}

.form-row input,
.form-row textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  resize: vertical;
  transition: border-color 0.2s ease;
}
.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-hint {
  font-size: 0.8rem;
  color: var(--text-faint);
  text-align: center;
}

.contact-direct {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.contact-pill {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  min-width: 0;
  overflow: hidden;
  transition: border-color 0.2s ease;
}
.contact-pill span:last-child {
  overflow-wrap: break-word;
  word-break: break-word;
}
.contact-pill:hover { border-color: var(--accent); }
.contact-pill-static { cursor: default; }
.contact-pill-static:hover { border-color: var(--border); }

.contact-pill-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-faint);
}

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-faint);
}
.back-to-top {
  color: var(--text-dim);
  transition: color 0.2s ease;
}
.back-to-top:hover { color: var(--accent-strong); }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 60px;
    min-height: auto;
  }
  .hero-media { order: -1; margin-bottom: 20px; }
  .hero-photo-frame { width: min(280px, 70%); margin: 0 auto; }
  .about-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .pub-grid { grid-template-columns: 1fr; }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-grid { grid-template-columns: repeat(3, 1fr); row-gap: 32px; }
  .carousel-slide img { height: 380px; }
  .carousel-btn { top: 190px; }
  .recognition-grid { grid-template-columns: 1fr; gap: 36px; }
  .career-row { grid-template-columns: 120px 1fr; }
  .career-note { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px 28px;
    gap: 18px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .skills-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 28px; flex-wrap: wrap; }
  .contact-direct { grid-template-columns: 1fr; }
  .value-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .carousel-slide img { height: 260px; }
  .carousel-slide figcaption { font-size: 0.85rem; padding: 14px 20px 18px; }
  .carousel-btn { width: 36px; height: 36px; font-size: 1.25rem; top: 130px; }
  .carousel-prev { left: 10px; }
  .carousel-next { right: 10px; }
  .career-row { grid-template-columns: 1fr; gap: 6px; }
  .career-when { order: -1; }
}